The Antminer S21 Hyd 319T is a liquid-cooled ASIC miner for the SHA-256 algorithm, supporting Bitcoin and Bitcoin Cash mining. It is designed for professional mining operations requiring high-density deployment and efficient thermal management. The "319T mix" likely refers to a mixed stock‑keeping variant of the standard 319 TH/s model.
In Endemine hosting at $0.08/kWh, a typical 3,500 W miner costs about $204/month in power. At home on €0.30/kWh it would be roughly €766/month.